Rock particle size prediction model of in-fracture explosive fracturing and influencing factor analysis

The In-Fracture explosive fracturing is a new technology of reconstructing a reservoir. So study on the shattered rock size of in-fracture explosion has great significance to evaluate the capacity of the main fracture’s Conductivity. In Blasting Engineering, there is no direct prediction model used for rock particle. In this paper, according to the experience of blasting, based on the In fracture theory, and through the conservation energy principle and the theory of rock fracture, a rock crusher size prediction model is established. Study case of calculated in-fracture explosion rock particles diameter is 1.23 mm, which consistent with the practice of blasting site, and Show that this model has some validity. And through analysis of key parameters, we give advices on In-Fracture explosive fracturing.